Patent GB-962496-A (GB)
Title: Adjustable injector razor
IPC: B26B21/24
Filed: 1962-06-05
Abstract: 962,496. Safety razors. PHILIP MORRIS Inc. June 5, 1962 [Sept. 15, 1961], No. 21683/62. Heading B4B. An injector razor comprises a cap 10, Figs. 4 and 6, having spaced blade stops 18 and a depending arm 16, a blade clamp 12 underlying the cap and provided with a blade guard 62 and depending arm 35, and means for adjusting the relative positions of the arms 16, 35 and thereby varying the cutting angle of the blade 15 disposed between the cap and clamp. The cap, together with its arm 16, is formed of stainless steel with a handle portion 90 secured to the arm, and the clamp and its depending arm 35 are formed of resilient stainless steel with the lower end of the arm 35 welded at 36 to the arm 16. The blade 15, which is urged against the cap by a bowed spring 88 on the clamp, has its forward cutting edge pressed against the stops 18 by a tab 19 which engages the blunt rear edge of the blade and extends forwardly from the centre of a bowed blade spring 23 secured at one end to the arm 16; when a used blade is to be replaced by a new blade from a magazine injector, the tab 19 is withdrawn from its engagement with the used blade by inserting the usual key of the injector so as to engage and flatten the spring 23, the key being guided in this action by a member 38 disposed between the arms 16, 35 and welded at its lower end to the arm 16. Movement of the resilient arm 35 to and from the arm 16 to adjust the cutting angle of the blade is effected by a button 65, Fig. 4, which is mounted for rotation, without axial movement, in aligned openings in the arm 16 and member 38 and has screw-threaded engagement with a nut 76 secured in an opening in the arm 35. In an alternative arrangement, the button 65a, Figs. 14 and 16, which is again rotatably mounted in the arm 16a, has two diametrically-opposed arcuate and sloping cam surfaces 102, 103 on its end face for coaction with a straight rearwardly-bent portion 115 on the arm 35a of the clamp; the cam surfaces 102, 103 are provided with diametrically-opposed pairs of grooves 104 ... 113 for receiving the portion 115 in different adjusted positions of the button and therefore of the arm 35a. The adjustment of the clamp arm 35b in the modification shown in Fig. 19 is effected by the lateral movement of a slider 126 in a recess 125 in the arm 16b so that its sloping cam surface 128 coacts with a correspondingly-sloped surface 132 on the arm 35b ; grooves 133 on the surface 128 co-operate with a ridge 134 on the surface 132 to hold the slider in adjusted position. In this construction, the injector key is guided by flanges on the arm 16b when flattening the bowed spring 23. The modified adjusting means shown in Fig. 21 consists of a toothed wheel 148 having a shaft 150 which is seated in bearings 151, 152 in the arm depending from the cap and carries cam segments 154, 155 at its ends bearing on the surface of the clamp arm 35c; the toothed wheel is held in adjusted position by its engagement with a spring 165 seated in a recess 166 in the cap arm. Reference has been directed by the Comptroller to Specification 933,760.